Search the web is the best way. But there are temples, open markets for cheap clothes including the weekend market. You can visit tourist agents and get an idea of all the tours they have. They have books full of ideas. Of course, there are the women but be careful, go have fun but don't fall in love.

Things to be careful about,
Don't wear any gold items.
Don't get into a fight with a Thai, you be fighting the whole family.
Be careful if you are carrying a purse or bag, kept it close to you and away from the road. Motorcycles will come along and grab it, Don't fight back the motorcycle will drag you don't the street.

Last and not least are the women. You can fall in love very easy here. Be very careful. Most are more interested in your money and not your heart.